DE1066258B - Electric rocker switch - Google Patents

Description

The invention relates to an electrical rocker switch with a tension spring arranged between the actuating rocker and the base base as a switching spring and with an approach arranged on the rocker with two driving surfaces for one contact arm supported at one end.

Such switches have the disadvantage that the actuation travel is relatively large. Comes namely a rigid contact arm to use, this brings with it the fact that even inadvertent small movement of the rocker switch, the contact is lifted, which of course is not desired. Rather, the withdrawal should only take place after the actuating member has traveled a certain distance, if a switchover is actually wanted. For this reason, on the contact arm Springs can be provided which are supported on the driving surfaces of the actuating rocker. These now cause the contact arm to move away from the fixed contact with a small path of the rocker switch does not take off yet, since the tensioned spring arranged between the contact arm and the driving surface is the Contact arm still presses against the fixed contact for a certain time until it relaxes. Only after this relaxation, so when the movement for a desired switch on the rocker switch is exercised, the lifting of the contact arm and switching to the other end position takes place. The rocker switch therefore not only leads a path corresponding to the switching path of the contact arm when switching off, but the rocker must also carry out a path that is appropriate for the respective Tensioning the springs is required.

The invention is now based on the object of reducing the switching and actuation travel to a minimum in such a switch, whereby at the same time a small design of the switch is achieved. Furthermore, the switch according to the invention in addition to its simplicity, a high level of switching reliability.

According to the invention, the contact arm consists of two superimposed on which the bearing point lying end abutting and at the other ends having a distance from one another Leaf springs, the ends of which are between the fixed contacts. Takes place with someone trained in this way The contact arm switches from one end position, so the pressure of the contact rocker can result decreases, the one contact pad due to the resilient spreading apart except for a small one Approach the distance to the other fixed contact before the other contact pad is lifted from the fixed contact will. This results in a small switching angle for the rocker switch.

The contact arm is expedient on its bearing electrical Rocker switch

Applicant:

Voigt & Haeffner Aktiengesellschaft,
Frankfurt / M., Hanauer Landstr. 142-172

Ludwig Kohl, book blades (Odenw.),

and Richard Lippert, Offenbach / M.,

have been named as inventors

place pressed against a connecting lug by means of a spring.

An embodiment of the invention is shown in the drawing, in which Figure 1 to 3 show the inventive Switch in one end position, in a middle position and in the other end position demonstrate.

The base of the switch is denoted by 1, which is provided with a cavity 2 and has blade-like bearing points 3 for mounting the actuating member 4. The switching spring 5 acting as a tension spring is fastened on the one hand to the actuating member 4 and on the other hand in the base. The contact arm 7 is pivotably mounted on a connection lug 6 in the base 1. It is pressed against the connection lug 6 by means of a spring 8, a cam-shaped elevation 9 being provided on the contact arm 7, which is formed by a silver attachment for the purpose of better current transfer. At the other end, the contact arm 7, the design of which will be discussed in greater detail later, has two contact plates 10, each of which interacts with a fixed contact 11 or 12 in the base 1.

A projection 13 is provided on the actuating member 4, which has the shape of a with an opening 14 has provided tongue. The shoulder 13 acts on the contact arm 7 with the driving surfaces 15, 16.

The contact arm 7 consists of two leaf springs 20 and 21, which are attached to the end 9 facing the bearing point lie against one another and are at a distance from one another at the other ends 10, the ends 10 between the fixed Kontaktenil and 12 are. By these two resilient legs 20, 21 of the contact arm 7 is achieved that when a circuit of Contact arm 7 not separated from the fixed contact at the beginning of the switching movement of the actuating member 4 becomes, but only when the actuator 4

909 630/245

Claims (2)

has already reached a certain switching angle. Furthermore, the inventive design of the contact arm 7 has the effect that when switching over one contact 10 approaches the other fixed contact by the resilient spreading apart up to a small distance before the other contact 10 is lifted from the fixed contact. In detail, the switching process takes place as follows. In the position of the switching arm 7 shown in Figure 1, it rests against the upper fixed contact 12. The surface 16 of the lug 13 holds the leaf springs 20 and 21 of the contact arm 7 taut, d. that is, they are essentially adjacent to one another. When switching over, the surface 16 is moved downward away from the contact arm 7 by the rocker switch. The springs 20, 21 relax in the process, and the contact pad 10 of the spring 21 approaches the lower fixed contact 11, while the contact pad 10 of the leaf spring 20 initially remains in contact with the fixed contact 12. This position is shown in Figure 2. During the further movement of the rocker switch 4, the upper driving surface 15 of the extension 13 acts on the upper leaf spring 20, so that its contact 10 is now lifted from the fixed contact 12. The actuating member 4 is meanwhile also pulled into the other position by the action of the switching spring 5, as a result of which the contact 10 of the leaf spring 21 with the fixed contact 11 closes quickly. The surface 15 now continues to act on the contact arm 7 until the two leaf springs 20, 21 again come to rest almost against one another. The invention is not restricted to the illustrated embodiment, but can also be used when contact is to be achieved at both ends by mounting the contact arm in its center. The actuating member 4 can then also be designed in such a way that a projection on the left and a projection on the right act on the contact arm in opposite directions. Patent λν s ρ rο c ηε: 1. Electric rocker switch with one between the rocker switch and the base arranged tension spring as a switching spring and with a projection arranged on the rocker with two Driving surfaces for a contact arm mounted at one end, characterized in that the Contact arm (7) made up of two superposed ends (9) lying on top of one another at the bearing point and at the other ends (10) spaced apart leaf springs (20,21), the ends (10) of which lie between the fixed contacts (11, 12). 2. Electrical rocker switch according to claim 1, characterized in that the contact arm (7) is pressed at its bearing point by means of a spring (8) against a connecting lug (6). Considered publications:
British Patent Nos. 596 721, 631635,
716143; French Patent No. 688,917;
U.S. Patent Nos. 2,648,730, 2,650,964. 1 sheet of drawings